"The people in their adolescence experiences confusion coming from burden from rapidly changing society and instability from transforming body and mind. If teenagers, undergo stumble and confucius times of life, understands himself/herself and raise their interest in others more, it will helps them to maintain stable mentality so they can lead sound and healthy adolescent period. Self-efficacy molded in adolescence have great effect upon their whole life. Positive perception and attitude being able to do anything given to do makes significant difference with preformation capability to do given task. This is to reflect the influence of volunteering upon the establishment of self-efficacy in youth period. Key words: teenager, youth, adolescence, volunteering, self-efficacy"